Video clips from the filming of action scenes for the major movie "Gangster Squad" to be released October 2012! Sean Penn, Ryan Gosling and Josh Brolin are seen in major gun fight and fist fight scenes right from the location set at MacArthur Park in Los Angeles. A rare close up view of a major Hollywood film location shoot. Two weeks of highlights in the filming of this movie based on the true story of an Los Angeles Police Squad in the '40s and '50s fighting to keep the East Coast Mafia out of LA. Sean Penn plays Mafia leader Mickey Cohen. Ryan gosling plays Sgt. Jerry Wooters and Josh Brolin plays

John O'Mara both real officers from the LAPD squad. Also seen in these shots, Anthony Mackie from "The Hurt Locker" and "The Adjustment Bureau."